Browsing by Author "7220d5df-cbb3-48b9-8b20-e7280dd6a07c"
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Richter Duk, Pablo; Cañas, Alejandro; Muñoz, Carlos; Leiva, Claudio; Ahumada, Inés (2011)A novel and very simple microextraction approach for pre-concentration and direct solid phase spectrophotometric measurement has been developed for the determination of chromogenic analytes. The model analyte to assess ...
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Richter Duk, Pablo; Leiva, Claudio; Choque, Carlos; Giordano, Ady; Sepúlveda, Betsabet (2009)In this study the sorption of nonylphenol was implemented on a rotating Teflon disk coated with a PDMS film on one of its surfaces. In this way, the disk, which has a high surface area, contacts only the liquid sample, ...